Gltje



COMPOSITIONS, COATING R PLASTKJ Cross Referenc Examiner UNITED I STATES PATENT OFFICE.

. enoaen n. oseoon, or TACOMA, wasnmeron.

anon.

No Drawing. Application filed September 28, 1925. Serial No. 58,935. 01 f '7 g The objectot my invention is the production of a glue to be used in the manufacture of wooden articles, such as columns, doors and furniture, which is water resistant, of great strength, does not excessively wear the knives of the machinery working on the wood, and which is considerably cheaper than animal or casein glues of corresponding characteristics.

One of the major problems in the manufacture of Wooden articles from glued stock, such as veneer construction, is the fact that when the rapidly moving knives of the machine pass over a glued joint the knives wear away very much faster at the point of contact with the glue than at any other point in their length and that therefore they have to be removed from the machine for regrinding much more often in order to maintain the desired uniformity of quality of work produced. This difiiculty is successfully solved by my glue, which also has all the other desirable qualities of other glues.

My composition consists of a mixture of cotton-seed meal, commercial borax, caustic soda, permanganate of potash, hydrated lime, and copper sulphate, and the addition of calcium chloride and sodium silicate thereto, acts as a filler.

In reparing the glue for use the several ingredients are separately prepared and are mixed in the following order and proportions:

One hundred pounds of cotton-seed meal is first mixed in two-hun re 0 woundred-and-ninety. pounds of water then a solution composed of three poun s of commercial borax dissolved in six to nine pounds of water 15 mixed therewith; two pounds of caustic soda is dissolved in four to SIX pounds of water and mixed therewith; one and a half unds of disso ved in three to pounds and mixed therewith; fifteen pounds of hvdrated lime is mixed with thirty to foiTyfive pounds of water and added to the mixture; and a solutionof eight pounds of co er sul hate in sixteen to twenty-t ree pounds oi water is mixed with the mass. The whole mass is thoroughly mixed and is then ready for use. It should have the consistency of a heavy liquid, such as molasses.

The quantity of water used in the preparation may be about two and three-quarter times the quantity of dry ingredients. The water aids in bringing the mixture into a homogeneous mass and controls its fluidity.

When a cheaper glue is desired a filler comprising a mixture of three pounds ol calcium chloride and fifty pounds of sodium gm dissolved inwater may be added.

This preparation needs no warming or cookin to make it ready for use and can be app 'ed at any time within twenty-four hours after the mixture has been prepared.

The cotton-seed meal used in this glue is the ordinary commercial article and contains a small amount of oil. The potassium permanganate is an oxidizin a cut to act on the oils or fats to prevent tlieir saponification when coming 1n contact with alkalies or caustics. The hydrated lime is used to assist in shortenin the time that it takes the glue to set. he copper sulphate acts as a water-prgoi g gent. The sodium silicats is entirely a filler ut exercises a certain amount of action on the protein, as is well known in the glue manufacturing trade. The calcium chloride is adapted to release the soda from the silicate and to prevent any further action of the sodium silicate after the glue has set.

I claim Y 1. A fluid composition adapted to form a water resistant, strong, non-abrasive glue comprising cotton seed meal, borax, caustic soda, permanganate of potash, hydrated lime and copper sulphate mixed in water.

2. A fluid composition adapted toform a water resistant, stron non-abrasive lue comprising a mixture 0 about one hun red parts of cotton seed meal, three parts of commercial borax, two parts caustic soda, one and a half parts of permanganate of otash, fifteen arts of hydrated lime an eight parts 0? copper sulphate, each separately dissolved or mixed with water and separately mixed with? the mass.

3. A fluid composition adapted to form a water resistant, strong, non-abrasive glue comprising cotton seed meal, borax, caustic soda, permanganate of potash, hydrated lime, copper sulphate, calcium chloride, and sodium silicate, mixed in Water.

4. A fluid composition adapted to form parts of copper sulphate, three parts of cala water resistant, stron non-abrasive lue cium chloride, and fifty parts of sodium comprising a mixture 0 about one hun red silicate, each separately dissolved or mixed 10 parts of cotton seed meal, three parts of with water and separately mixed with the 5 commercial borax, two parts of caustic soda. mass.

one and a half parts of permanganate of potash, fifteen parts of hydrated lime, eight GEORGE H. OSGOOD. 

